Ratchet type screwdriver that has deep spiral grooves in its shank, which is free to rotate within the handle. By using a pawl in the handle, which rides in the spiral groove so that when the handle is pushed along the shank toward the work, the shank rotates and turns the screw

1. Brace clamped around a form when a concrete column is being poured. Metal mounting strap on an electrical receptacle.
2. Also called a head jamb, it's the upper horizontal finish member in a window frame.

Called a hinged pipe vise, this clamping device has a fixed lower jaw and an upper jaw moveable by a screw thread and is hinged on one side so that it can be opened to allow a length of pipe to be inserted.

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